Tread portion of an automobile tire



FIG. 1 is a front view of a tread portion of an automobile tire according to the present invention;

FIG. 2 is a perspective view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a fragmentary enlarged view showing the details of the tread portion;

FIG. 6 is an end view taken along line 6-6 in FIG. 5; and,

FIG. 7 is an end view taken along line 7-7 in FIG. 5.

Broken lines in the drawing figures are used to show portions of the tire that are not being claimed and thus form no part of the claimed design. 

The ornamental design for a tread portion of an automobile tire, as shown and described. 